NYC Building Records · BBL 3011220039
12 UNDERHILL AVENUE
Brooklyn · Block 1122 · Lot 39 · Walk-up apartment (Class C1)
Owner of record
B UNDERHILL LLC
HPD-registered head officer: TOM ROSENBERG
HPD registered contacts
People legally accountable to HPD for conditions at this building, in registration-priority order:
- Head OfficerTOM ROSENBERG
- Corporate OwnerB UNDERHILL LLC
Most recent deed
Last transferred on Dec 19, 2025 to B UNDERHILL LLC.
Previous owner: 12 UNDERHILL SK LLC; 12 UNDERHILL MC LLC
Cash sale: no recorded mortgage tied to this transfer.
🔒 See full deed history for this building →Recent ACRIS documents (last 5)
DateTypeAmountParties
Dec 19, 2025DEEDNot disclosedParties redacted — full names in MetroDeeds Scout+
Sep 19, 2017MTGE$747KParties redacted — full names in MetroDeeds Scout+
Sep 19, 2017AGMT$3.3MParties redacted — full names in MetroDeeds Scout+
Oct 17, 2007DEEDNot disclosedParties redacted — full names in MetroDeeds Scout+
Oct 17, 2007DEED$1.1MParties redacted — full names in MetroDeeds Scout+
🔒 Unlock party names + multi-decade history →Building stats
Units
8
Year built
1930
Class
C1
Borough
Brooklyn
- Zoning:
- R6B
- Lot size:
- 2,400 sqft
- Building area:
- 6,752 sqft
- Floors:
- 4
- Assessed value:
- $1.3M
- Community district:
- 308
- Council district:
- 35
HPD violations
0 open
Most severe class on record: Class C (immediately hazardous)
No open violations on record. Source: NYC HPD.
🔒 See full violation history →Recent HPD violation details
Most recent 5 violations issued by NYC HPD at this address:
- Class CInspected Feb 27, 2025567 (C) § 27-2017, 27-2017.1, 27-2017.4, 27-2017.5, 27-2017.8, 27-2019, 27-2021 HMC: ABATE THE NUISANCE CONSISTING OF EVIDENCE OF RATS AND A…
- Class BInspected Jan 25, 2025§ 27-2026, 2027 HMC: PROPERLY REPAIR THE SOURCE AND ABATE THE EVIDENCE OF A WATER LEAK AT CEILING IN THE 3rd ROOM FROM EAST LOCATED AT APT 4…
- Class CInspected Jan 25, 2025567 (C) § 27-2017, 27-2017.1, 27-2017.4, 27-2017.5, 27-2017.8, 27-2019, 27-2021 HMC: ABATE THE NUISANCE CONSISTING OF EVIDENCE OF RATS AND A…
- Class CInspected Jan 25, 2025§ 27-2005, 27-2007, 27-2041.1 HMC, §238, § 309; § 107 (2) ( C) MDL AND 28 RCNY §25-171: REPLACE OR REPAIR THE SELF-CLOSING DOORS THAT IS MIS…
- Class AInspected Jan 25, 2025§ 27-2005 ADM CODE REPAIR THE BROKEN OR DEFECTIVE PLASTERED SURFACES AND PAINT IN A UNIFORM COLOR AT CEILING IN THE KITCHEN LOCATED AT APT 4…
Recent ACRIS activity
5 documents in the last 5 years (most recent Dec 19, 2025).
Other buildings in this portfolio
B UNDERHILL LLC controls 3 NYC buildings. Top properties by HPD violation count:
- 600 LINCOLN PLACE159 violations
- 228 KINGSLAND AVENUE36 violations
More from MetroDeeds
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